Hello, so I’ve been searching for weeks on how to do the most affordable way of going about boosting my Ka24e. I found a turbo kit on eBay what do I do for the tuning and everything. I’m a total vw guy have built plenty but that’s a whole different world. I’ve got a 91 Nissan d21 and I’m doing a full restore on it I don’t have any idea on why it appeals to me. But I’m in the process of finding a new motor for it and I want to boost it. Please help with your parts list and any suggestions.

That depends entirely on what the power goals are. If you're just looking to add minimal boost (like 5 psi or so), you can get away with a rising rate fuel pressure regulator. More than that (like 8 or 9) and you'll want to upgrade to larger injectors, fuel pump, knock your timing back a little, maybe do a hacked MAF, or adjustable fuel pressure regulator along with a rising rate fuel pressure regulator.
More than that (9+) and you'll want ECU upgrades.

Also budget for a clutch.